100% cotton Shinai bag. Japanese characters reads FUDOSHIN. It has also a patter of Owl. FUDOSHIN means 'Immovable Mind'. Not only in Kendo, but this word is widely used in many different types of Martial Arts. A Martial Artist should always keep FUDOSHIN, in order to be calm, detached and unthreatened. It was developed by Miyamoto Musashi and it is fundamental to all warrior philosophy. FUDOSHIN should not only be applied to when practicing Martial Arts, but to daily life as well.